The majority of WDM Metro revenue growth in 2017 occurred in two regions—Asia Pacific and EMEA (Europe, Middle East, and Africa).

Three vendors—Cisco, ECI Telecom, and ZTE—each increased their WDM Metro revenue by over 40 percent.

Demand for coherent line cards continued to grow at a high rate, and approximately 185 thousand coherent line cards shipped for metro applications in 2017.

“The WDM Metro systems market jumped in 2017,” said Jimmy Yu, Vice President at Dell’Oro Group. “We all knew that demand for WDM systems in metro applications would increase, but it was a huge surprise to see an 18 percent revenue increase in 2017,” added Yu.